wannacry | b063505b0b1581f2cfd27510b252d690f5ddba4f21c60efe2718292369c40d60

General

Target

2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe
Size

5.0MB
MD5

d92332e476685d0cfe0fca5dc060f625
SHA1

5e9ca2efdc4b775ece0f1e1dadeabce0255ba5d3
SHA256

b063505b0b1581f2cfd27510b252d690f5ddba4f21c60efe2718292369c40d60
SHA512

f8d33be4d060087bfbfe51fbeff3c94453b7f6218d029420b5717865bccceb7ed976d6b997a00edaa7ceff1e08b4e9ea88cfb0c6032593bc702d9e8c750c02f5
SSDEEP

49152:UnpENPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnv:EpOoBhz1aRxcSUDk36SAEdhv

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3192) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

Executes dropped EXE 1 IoCs

pid	Process
2384	tasksche.exe

Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_240637968	tasksche.exe
File created	C:\Windows\eee.exe	tasksche.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 404 wrote to memory of 2384	404	2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe	85
PID 404 wrote to memory of 2384	404	2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe	85
PID 404 wrote to memory of 2384	404	2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:404
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  PID:2384

C:\Users\Admin\AppData\Local\Temp\2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-07-05_d92332e476685d0cfe0fca5dc060f625_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:4528

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

2

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\tasksche.exe

Filesize
2.0MB

MD5
40db3b23bf92d4abc4b8968ee0eff3c8

SHA1
fcfe3177895813dd8481b3f2015995ceda5ada46

SHA256
343a4acdc83be9df0a79e30cde7d4f2e0a0371d09927460e8471c4c2950385f3

SHA512
1ddbd88318f266e4ff943737ae098b407a87f8c9fb6d59941e656fd60e359bcf92ebcf0fec8de774c316d444d4f0bc36690af365196335b394b7163f19bab53f

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Analysis

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